baber/WOPTO huggingface dataset:
Patent KR-20000055050-A (KR)
Inventor: WHANG DONG GON
IPC: F25B29/00
Filed: 1999-02-03
Abstract: PURPOSE: An operation method of an absorptive heat pump is provided to obtain a stable and high COP(coefficient of performance) by keeping coolant steam as the high concentration and purity degrees even if the changes of a load and outside air temperature occur. CONSTITUTION: A rotation number of a cooling fan(105) increases and the radiation amount of cooling water increases. The temperature of the cooling water is dropped so that the heat exchange amount between a strong solution of a water cooling absorber(5) and the cooling water is increased. The temperature of the strong solution pumped to a rectifier(4) drops and the heat exchange amount between the coolant steam of the rectifier and the strong solution increases. Even when the rotation number of the cooling water increases, the flow speed of the cooling water increases. The heat exchange amount between the strong solution and the cooling water increases. The temperature of the strong solution drops so that the heat exchange amount between the coolant steam and the strong solution increases. Thereby, high purity and concentration are kept and the COP of the system is obtained.
Patent KR-20000055774-A (KR)
Title: Exhaust brake system
Inventor: CHOI JAE HO
IPC: F02D9/06
Filed: 1999-02-10
Abstract: PURPOSE: An exhaust brake system is provided to achieve an improved performance of exhaust brake and reduced cost and parts count while allowing an exhaust brake valve to be directly controlled by a solenoid and eliminating a device for supplying a compressed air. CONSTITUTION: A system comprises an exhaust brake valve(1), an intake silencer valve(3), an exhaust brake switch(5) controlling valves(1, 3), a clutch switch(7), and a power relay(9). The exhaust brake valve(1) is controlled by turning on the exhaust brake switch(5) so as to operate an exhaust brake, and the clutch switch(7) is turned on or the exhaust brake switch(5) is turned off so as to release the exhaust brake. First and second solenoids(23, 25) are installed at a portion of the exhaust brake valve and the intake silencer valve, respectively, so as to be controlled by a current supplied from the power relay(9) in accordance with operation of the exhaust brake switch and the clutch switch. Thus-controlled first and second solenoids(23, 25) open/close the exhaust brake valve and the intake silencer valve so as to operate/release the exhaust brake.
Patent KR-19990077426-A (KR)
IPC: H01L27/108
Filed: 1999-02-12
Abstract: 본 발명의 특성은 최소 치수 미만(subminimum dimension)의 워드라인을 그 워드라인과 경계가 없는(borderless) 비트라인 컨택트(contact)를 사용하여 대략 최소 치수인 개개의 게이트 세그먼트에 결합시키는 것이다.  본 발명의 또다른 목적은, 개개의 세그먼트 게이트 전도체를 구비하고, 워드라인과 경계가 없는 비트라인 컨택트를 갖는 최소 치수 미만 게이트 커넥터를 구비하는 트랜지스터를 제공하는 것이다.  본 발명은 게이트를 포함하는 트랜지스터를 구비하는 DRAM 셀로 이루어진 반도체 구조체 및 그 제조 방법에 관한 것이다.  게이트는 얇은 유전성 재료 상의 폴리실리콘과 같은 게이트 전도체의 개개의 세그먼트를 포함한다.  트랜지스터는 소스/드레인 영역을 구비하는 단일 수정 반도체 기판을 더 포함한다.  활성 전도성 워드라인은 세그먼트 게이트 전도체 상에 증착되며 전도성 재료인 워드라인을 통해 그 세그먼트 게이트 전도체와 전기적으로 접촉한다.  활성 워드라인이 세그먼트 게이트 전도체와 접촉하는 부분을 제외하고 절연성 재료가 활성 워드라인을 완전히 둘러싼다.  절연성 재료와 접촉하는 비트라인 컨택트는 소스/드레인 영역 내에 있는 워드라인 컨택트를 둘러싸서 비트라인 컨택트를 워드라인과 경계가 없게 만든다.
Patent KR-20000056891-A (KR)
Title: Method for driving plasma display panel
Inventor: EO YUN PHIL
IPC: G09G3/28
Filed: 1999-02-27
Abstract: PURPOSE: A method for driving a plasma display panel is provided to facilitate the design and modification of a driving apparatus for driving a plasma display panel, simplify the configuration of the driving apparatus, and improve display luminance. CONSTITUTION: A method for driving a plasma display panel performs gray-scale display by p sub-fields. An address step(A), a sustain discharging step(S) and a resetting step(R) are carried out in each sub-field. The plasma display panel driving method includes a step of dividing a unit frame to be displayed into a predetermined number of unit driving periods, corresponding to the number of gray scales. Each unit driving period is split into a unit address period, a unit sustain discharging period, and a unit reset period. Each unit address period is divided into p time periods, and each of the divided time periods is assigned to each sub-field. The sub-fields sequentially begin, having a time lag of the unit driving period for each scanning electrode line, to be overlapped. In each of the assigned time periods within each unit address period, an address voltage is applied between a scanning electrode line and address electrode line corresponding to the initial unit driving period of the sub-fields. During all the unit sustain discharging periods, a sustain discharging voltage is supplied between common electrode line and all of scanning electrode lines. During the unit reset period, a reset voltage is applied between scanning electrode lines corresponding to the final unit driving unit of the sub-fields.
Patent KR-19990078545-A (KR)
Title: 고기능성연수기
Filed: 1999-03-20
Abstract: 본 발명은 고기능성 연수기에 관한 것으로서, 양이온 수지를 사용하여 중금속 및 금속성 이온성분을 흡착 제거하는 동시에 뛰어난 원적외선 방사효과를 기대할 수 있는 다층 기능 필터수단을 사용하여 염소를 100% 제거하고 물의 활성화를 도모하여 단순한 물을 기능성을 가진 물로 전환시켜 줄 수 있도록 한 고기능성 연수기를 제공함으로써, 피부노화를 촉진하는 염소 및 유기염소 화합물의 완전한 제거효과는 물론 물분자 운동의 활성화로 인한 수질 개선효과로 인하여 각종 피부질환을 없애주고 피부미용과 건강에 크게 도움을 줄 수 있도록 하고자 한 것이다.
Patent KR-19990088404-A (KR)
Title: 데이터버스상의데이터를최대속도로전송하는방법및장치
IPC: H04L29/08
Filed: 1999-05-19
Abstract: 본 발명은 직렬 데이터 버스에 접속된 장치들 간에 최대 속도로 데이터를 전송하는 방법 및 장치에 관한 것이다.  각각의 장치는 여러 가지 속도로 데이터를 전송할 수 있다.  전송 장치는 먼저 이 전송 장치의 최대 전송 속도로 데이터 패킷을 타겟 수신 장치에 전송한다.  초기 데이터 전송의 수신을 확인하는 인식 신호가 타겟 수신 장치로부터 수신되는 경우, 후속 데이터 패킷 전송을 위한 전송 속도는 금방-전송된 데이터의 속도로 설정된다.  그렇지 않으면, 전송 속도가 감소되고, 그 공정이 반복된다.  일단 인식 신호가 수신되고 속도가 설정되면, 그 속도는 수신 장치와의 장래 통신에 사용하기 위해 통신 장치의 메모리에 기억될 수 있다.  그 방법은 버스에 접속된 다른 타겟 장치에 대한 적절한 최대 전송 속도를 확립하기 위해 반복된다.  본 발명은 버스 관리자의 부재 하에 IEEE 1394 직렬 버스 인터페이스와 연관되어 사용될 때 특히 유용하다.  각각의 장치의 메모리가 클리어되는 버스 리셋 오퍼레이션 이후, 개개의 장치들은 필요할 경우, 인식 신호가 수신될 때까지 데이터 패킷을 여러 가지 속도로 전송함으로써 다른 장치들 각각에 대한 적절한 데이터 전송 속도를 재설정한다.
Patent KR-20000074793-A (KR)
Filed: 1999-05-26
Abstract: 낮은 내부저항 전류 집전자 구조를 갖는 전기 충전/방전 장치에 있어서, 그 전극판이 둘 또는 그 이상의 전류집전 단자를 가지므로 내부 저항을 줄이기 위해 둘 또는 그 이상의 입출력 전류회로로 구성되고, 전극판의 상기 둘 또는 그 이상의 전류집전 단자는 외부 연장 전류단자, 전극판 측부들, 또는 원형, 사각형, 또는 다른 기하학적 모양을 갖는 도전재료로 이루어지는 견고한 또는 속이 비어있는 튜브형 도전체 막대를 포함하여, 병렬 결합을 위해 동일한 극성을 갖는 전극판과 연결하거나 또는 직렬 결합 또는 직렬 및 병렬의 혼합 결합을 위해 다른 극성을 갖는 전극판과 연결하기 위해 전기 충전/방전 장치의 전극판에 제공된 도전체 관통구멍을 통해 관통시키는 것을 특징으로 한다.
Patent KR-20000005890-A (KR)
Inventor: TOMIOKA SHOICHI
IPC: H01R13/633
Filed: 1999-06-03
Abstract: PURPOSE: A card ejecting device ejects a corresponding card inserted into a holder having a contactor from the holder. CONSTITUTION: When a card(C) is slidably inserted into a holder(1) of case to a predetermined position, this card(C) is connected to a contact part (5B) of the contactor(5) mounted to the holer, a slider(6) is guided to the holder(1) and performs a sliding motion. The card ejecting device pushes a rear end of the card(C) at press parts(9A,10A) of the slider(6), the card moves to an ejection position of the card. The press parts(9A,10A) extend to a pressing direction of the card, and are formed to a front end of the parts(9,10) of the slider(6). Spaces(3A,3B) are formed in the holder(1). The spaces allows a proceeding of the press parts(9A,10A) in a proceeding of the slider(6).
Patent KR-20010002549-A (KR)
Inventor: KIM HYEON SU
IPC: G11B15/02
Filed: 1999-06-15
Abstract: PURPOSE: A method for muting video for an A/V system is provided to solve a problem to fail to meet a video muting timing by performing a video muting process through a software method without constructing a separate port. CONSTITUTION: A method for muting video for an A/V system includes following processes. When a video muting signal is recognized(S21), a bit value of BME of a register installed to a video controller is cleared(S22). In order to mute a video, a counter is increased until a setting time(S24). When the video muting setting time is passed, the bit value of BME of the register is returned as an enable state and the video mute is canceled(S25). A process for changing the bit value includes a process for disabling the bit value of BME when a mute on signal is inputted and a process for enabling the bit value of BME when a mute off signal is inputted.
Patent KR-20010002601-A (KR)
Inventor: CHOI SEON
IPC: C10G35/00
Filed: 1999-06-16
Abstract: PURPOSE: Wash oil for a hydrocarbon pyrolysis gas compressor causing no vaporization under operating conditions of the compressor without adding any special additives, having excellent solubility and cleaning effect and capable of effectively suppressing generation of foreign materials in the compressor, process for producing the same and method for washing the compressor by using the same are provided which prevent the efficiency degradation of the compressor in advance and the reduction of a treating amount of a hydrocarbon pyrolysis process and remarkably reduce maintenance cost. CONSTITUTION: The wash oil capable of improving the efficiency a pyrolysis gas compressor and preventing the deposition of foreign materials in a pyrolysis gas compressor for pressurizing to separate products in a hydrocarbon pyrolysis process is prepared by sending oil components containing 9 carbons or more and mainly aromatic compounds and generated as a by-product in a catalytic reforming process of naphtha, a pyrolysis process of naphtha, an isomerization process and/or in a refining process of crude oil to a distillation tower and fractional distillation of only oil components containing 10 carbons or more at the distillation tower.
Patent KR-20010003793-A (KR)
Inventor: PARK JAE HYEONG
IPC: H04L29/10
Filed: 1999-06-25
Abstract: PURPOSE: A universal serial bus digital subscriber line modem is provided which allows PC users having no Ethernet interface network interface card or ATM-25 network interface card to be able to easily use a digital subscriber line modem, thereby enabling super fast ATM service using telephone lines. CONSTITUTION: A universal serial bus digital subscriber line modem includes a DSP daughter board(DB). This DSP daughter board has a DSP/framer block(13) which is connected to a main board(MB) through a UTOPIA interface(9) and an ADD/DATA interface(10) and modulates data received through the UTOPIA interface into DSL standard or performs its reverse function, a local memory block(14) for storing temporary data used by the DSP/framer, an analog front end block 15 for carrying out analog-to-digital conversion and digital-to-analog conversion functions and filtering function, and a line driver block(16) for performing impedance matching and separating functions for telephone lines.
Patent KR-20000006513-A (KR)
Inventor: RAI YASKI
IPC: G09G3/20
Filed: 1999-06-28
Abstract: PURPOSE: The liquid crystal display is provided to reduce consuming electric power by improving sensitivity of the outer light amount when the outer light amount is changed. CONSTITUTION: In the liquid crystal display, a light-receiving device(1) receives the outer light itself, and the liquid crystal display turns on or off a light source(114) according to the output of the receiving light, and open and close a cover(121) automatically. The light-receiving device(1) is equipped to the direction of a back light in a casing(120) of the light crystal display and receives an outer-light received from a light-collecting part(115) and an inner-light generated from the light source(114). The liquid crystal display panel(100) improves the sensitivity of the outer light amount by changing automatically contrast or contrast ratio according to the output of the receiving device(2).
Patent KR-20000016907-A (KR)
Inventor: AWATANI TAKESHI
IPC: A23N12/00
Filed: 1999-07-07
Abstract: PURPOSE: A food processing device and food processing method are provided to more completely remove fibriform impurities contained in the food. CONSTITUTION: The food processing device is equipped with a fiber shaped impurities removing device to remove a fibriform impurities contained in the food or in the food mixture. The fiber removing device is equipped: a separating plate(111) which is hard to pass the food, to divide upward and downward; a flowing tub(110) to flow the food from the upside of the separating plate by flowing a liquid; an agitating plate(120) having a horizontal flowing shaft core toward a flowing direction of the flowing tub, and to be shaken the position inclined to the surface as the standard; a driving device to reciprocate and to shake the agitating plate(120); an aeration device having an emitting hole to emit a gas to the liquid.
Patent KR-20010009381-A (KR)
Inventor: YANG SUNG CHANG
IPC: F21V17/00
Filed: 1999-07-09
Abstract: PURPOSE: A fluorescent lamp shade is provided to prevent weakening of adhering force by installing a fixture including fixing protrusions, mounts and fastening hooks to a lamp shade. CONSTITUTION: A lamp shade has inserting sections(2,3) where a number of fixtures(4) are inserted to be fixed to a fluorescent lamp. The lamp shade is made of an aluminium plate having a thickness of 0.5mm. The reflecting planes include two symmetrical sets of planes(12,13,14,15) and planes(12',13',14',15'). The planes(15,15') have an angle of 207 degrees, the planes(15,14) have an angle of 138.5 degrees, the planes(14,13) have an angle of 174 degrees, the planes(13,12) have an angle of 171 degrees, and the planes(12,11) have an angle of 255 degrees. The fixture(4) includes fixing protrusions, mounts and fastening hooks for being fastened into the inserting sections(2,3) of the lamp shade.
Patent KR-19990078768-A (KR)
Title: 보너스포인트의 교환방법
Filed: 1999-08-05
Abstract: 본 발명은 별개의 기업에서 제공되는 보너스포인트를 다른 기업의 보너스포인트 또는 사이버머니(Cyber Money; 전자화폐)로 교환하는 방법에 관한 것으로서, 매도 또는 매수하고자 하는 보너스포인트의 종류 및 수량을 입력받는 주문수령단계와: 매도주문일 때 회원이 상기 포인트의 종류를 상기 수량 이상 보유하고 있는 경우 보유수량에서 상기 수량을 공제한 수량 및 상기 수량의 보너스포인트가 소정의 환율에 따라 계산된 사이버머니를 포인트정보DB에 저장하며;  매수주문일 때  매수할 포인트의 종류 및 수량을 회원이 보유 중인 사이버머니에서 상기 계산된 사이버머니를 공제한 금액 및 상기 포인트의 종류 및 수량을 포인트정보DB에 저장하는; 주문수행단계:를 포함하는 보너스포인트 교환방법이다. 
     본 발명의 방법에 의하여 소비자는 조기에 실질적인 보너스 혜택을 받을 수 있으며, 회원사로 선정된 기업은 집단적인 고정고객 즉, 회원의 확보가 가능하여 타 동종기업보다 우수한 경쟁력을 갖을 수 있게 된다.
Patent KR-20000062123-A (KR)
Title: 검색 시스템, 검색 장치 및 방법, 및 입력 장치 및 방법
IPC: H04N7/173
Filed: 1999-08-30
Abstract: 본 발명은 방송된 내용의 검색 오퍼레이션 동안 정확한 키워드가 공지되지 않은 경우조차 필요한 검색을 가능케 하는 것에 관한 것이다.  방송국으로부터 방송된 음악 작품의 명칭 및 시간 정보를 포함하는 연주 목록은 DB1에 축적된다. 사용자가 등록한 장소 정보 및 방송국 정보, 및 사용자 ID는 DB2에 축적된다.  사용자가 방송국으로부터 방송된 음악 작품을 선호할 때, 그 장소에서 북 마커의 버튼을 누름에 따라, 그 시점에서 시간 정보는 메모리에 저장된다.  북 마커에 저장된 시간 정보 및 사용자 ID는 게이트웨이 장치를 통해 검색 엔진에 공급된다.  검색 엔진에서, 검색될 방송국은 DB2에 있는 사용자 ID에 기초하여 제한되고, DB1은 시간 정보에 기초하여 검색된다.  시간 정보로 나타낸 시점에서 방송된 음악 작품이 검색되고, 검색 결과는 게이트웨이 장치에 전송되고 디스플레이된다.
Patent KR-20010028342-A (KR)
Inventor: CHOO DAE HO
IPC: G02F1/1341
Filed: 1999-09-21
Abstract: PURPOSE: A method of supplying liquid crystal is provided to be capable of considerably reducing a time for injecting a liquid crystal and preventing injection of the liquid crystal from being obstructed owing to an alignment layer. CONSTITUTION: The method of supplying liquid crystal comprises forming a liquid crystal layer on an inner surface of either one(10) of two substrates forming a panel of a liquid crystal display device, and assembling the two substrates comprising a substrate on whose inner side the liquid crystal layer is formed. Before forming the liquid crystal layer, a protection wall(15) for preventing the contact between a liquid crystal(17) and a sealant(13) is formed between two regions. The liquid crystal layer is formed on one of the two regions, and the sealant is deposited on the other one of the two regions. A spacer is formed by use of an exposure process together with the same material as the protection wall(15).
Patent KR-20010035697-A (KR)
Inventor: CHO SEONG JE
IPC: H01J31/15
Filed: 1999-10-01
Abstract: PURPOSE: A vacuums fluorescent display is provided to be capable of increasing a visual field by minimizing the height of the fluorescent display tube. CONSTITUTION: A vacuums fluorescent display(VFD) has a rear substrate(2) and a built-in-type cover glass(4) attached with the rear substrate(2) to form a closed space. An exhaust tube(16) is assembled on an anode glass(4). A wire layer(6), an insulation layer(8), an anode electrode(10), a filament(12) and a grid electrode are formed on the rear substrate(2). The wire layer(6) is used to connect the interior of the fluorescent display tube, and the insulation layer(8) blocks an electric conduction of the wire except for a conduction hole. The anode electrode(10) emits light by hot electrons and consists of a fluorescent layer(10a) and a conduction layer(10b). The filament(12) is supplied with an external power to emit hot electrons. The grid electrode(14) accelerates and diffuses the hot electrodes to the anode electrode(10) or blocks the hot electrodes.
Patent KR-20010036406-A (KR)
Inventor: LEE SEUNG SU
IPC: H01L21/3065
Filed: 1999-10-08
Abstract: PURPOSE: A dry etcher is provided to effectively utilize plasma in an etching process, by installing and controlling an electromagnet in upper and lower portions inside a chamber to form a magnetic field. CONSTITUTION: An etching process is performed in a process chamber(11). Process gas is injected into a gas injection hole(14) installed in a portion of an outside of the chamber. Upper and lower electrodes(12,17) are installed in upper and lower portions inside the chamber. A wafer is settled in a wafer settling unit(16), installed on the lower electrode. A radio frequency voltage supplying unit(20) applies a radio frequency voltage, connected to the upper or lower electrode. Upper and lower magnetic field formation units(25,26) form a magnetic field layer surrounding plasma, installed in the upper and lower portions inside the chamber. A control unit controls a size, a direction and an order of the magnetic field in the magnetic field formation units by controlling current. A vacuum apparatus(19) controls pressure and absorbs a reaction material in the chamber.
Patent KR-20010038281-A (KR)
Inventor: CHO JAE WON
IPC: H01L23/495
Filed: 1999-10-23
Abstract: PURPOSE: A fan-out type package and a method for manufacturing the same are to expose a spring pin for a lead frame to the outside of a region occupied by a chip, thereby obtaining a common use of a foot print and reducing its manufacturing cost. CONSTITUTION: The fan-out type package comprises a bonding pad(11a) formed on a chip(11). To the bonding pad, a spring pin(12) for a lead frame is fitted. The spring pin is exposed to the outside of a region occupied by the chip. After upsetting a wafer with which the spring pin is fitted, a sticky tape is attached to an end of the spring pin. The wafer is cut to form the chip using a sawing blade. With the cutting, the spring pin for the lead frame is exposed from the region occupied by a chip. The back face of the wafer is attached to a jel package(15). The sticky tape is then removed. A vacuum line is connected to a hole of the jel package. With the aid of such vacuum, the fan-out type package is separated from the jel package.
Patent KR-20010045925-A (KR)
Inventor: JANG IN SEOK
IPC: B29C35/02
Filed: 1999-11-09
Abstract: PURPOSE: A vulcanization metal mold forms a vent line on a side metal mold forming a side wall part of a tire without influence on characters formed thereon to discharge air inside the side metal mold outside to prevent bent rubber from forming on the side wall part of the tire. CONSTITUTION: A grooves(10) is formed on a side metal mold(1). Multiple air discharging holes(11) communicating with the groove(10) are formed. A ring(2) with characters(20) carved on the upper surface thereof and multiple vent lines(22) formed thereon is inserted into the grooves(10) so that air in the metal mold(1) is discharged outside through the vent lines(22), a gap(12) between the ring(2) and the inner surface of the groove(10) and the air discharging holes(11).
Patent KR-20000035452-A (KR)
Inventor: SHIMIZ YOSHIAKI
IPC: H01L21/8242
Filed: 1999-11-12
Abstract: PURPOSE: A semiconductor memory device is provided to escape an increase of a chip size by realizing small-sized wiring and devide region. CONSTITUTION: A semiconductor memory device comprises an individual data latchcircuit(21), an internal clock generating circuit(23) and a plurality of first stage circuits(31-3n). Data supplied through data pads(1-n) is applied to the individual data latch circuit(21) through the corresponding first stage circuits(31-3n) in synchronization with both edges of a clock signal generated from the internal clock signal generating circuit(23). The data pads(1-n) are arranged in a column to form a data pad stream(P). The data latch circuit(21) is vertical to a first line which passes on the data pad stream(P), and is disposed in an area surrounded by a second line(12) and a third line(13). The second line(12) passes a first stage of the data pad stream(P), and the third line(13) passes the last stage of the data pad stream(P). A wire length to the data latch circuit(21) from each of the first stage circuits(31-3n) is set so as to correspond to the data latch circuit(21) from the internal clock signal generating circuit(23).
Patent KR-20010048331-A (KR)
Inventor: HAN MYEONG HUI
IPC: H01L23/525
Filed: 1999-11-26
Abstract: PURPOSE: A method for manufacturing a fuse part is provided to prevent moisture from penetrating through a sidewall of a fuse opening part, by forming a guard ring surrounding the fuse opening part. CONSTITUTION: A fuse line(124) is formed. The first interlayer dielectric(126) is formed on the fuse line. An etch stop layer for a guard ring opening is formed as a predetermined conductive layer of a semiconductor device, on the first interlayer dielectric wherein the etch stop layer is a ring type surrounding a fuse opening region(150). The second interlayer dielectric(136) is formed on the etch stop layer. A lower interconnection(138) is formed on the second interlayer dielectric and in a portion except a fuse part of the semiconductor device. The third interlayer dielectric(140) is formed on the lower interconnection. The third interlayer dielectric is etched to form a contact hole exposing the lower interconnection while the third and second interlayer dielectrics are sequentially etched to form the guard ring opening exposing only the etch stop layer. A conductive material layer for forming an upper interconnection(142') is formed on the entire surface including the contact hole and the guard ring opening. The conductive material layer for the upper interconnection is patterned to form the upper interconnection while the conductive material formed in the guard ring opening is removed. The etch stop layer exposed to the guard ring opening is removed. A passivation layer(144) is deposited on the entire substrate including the upper interconnection and the guard ring opening to form a guard ring.
Patent KR-20010053709-A (KR)
Inventor: OH JONG SEOK
IPC: C01F5/30
Filed: 1999-12-01
Abstract: PURPOSE: Provided is a method for preparing a magnesium chloride which is simply and easily prepared cost-effectively. And a molded materials for construction by using the same is also provided, which is hardly burned by fire and has excellent adiabatic effect and interior smell removing effect. CONSTITUTION: The method comprises the steps of: (i) after supplying water from a water storage tank(3) to a reaction container(7) through a water supplying device(4) at room temperature, supplying 35% hydrochloric acid as much as 0.6-1 times of the supplied water through a hydrochloric acid supplying device(5) to uniformly mix them; and (ii) after putting 50-60% of the total injection amount of magnesium oxide through a magnesium oxide supplying device(7) in the solution of the step (i) to adjust the pH to be 7 during 1 hour of initial reaction time, gradually putting 30-40% of the total injection amount of magnesium oxide in the solution during the next 1 hour and finally putting 10-20% of the total injection amount of magnesium oxide in the solution during the next 1 hour. The molded materials for construction is prepared by mixing the magnesium chloride as much as 0.5-1.5 times of magnesium oxide with the magnesium oxide and then organic matter as much as 3-7 times of magnesium oxide therewith.